Post by thread:[OT] CO sensors - old thread, new source

How did I get on this list and can someone take me off please? I have no idea what a PIC programmer is and don't really have a use for one. Please don't tell me how to unsubscribe -- just do it please -- someone. Thanks and a happy new year Andrew On Tue, 6 Jan 1998, DREITEK wrote: {Quote hidden}> In a message dated 98-01-06 10:18:34 EST, you write: > > << > awhile back, there was some discussion. I was going thru old > magazines and found Motorola makes a MGS1100 CO sensor. > Just FYI is all. >> > > My 2cents worth, > I contacted Motorolla and they told me that they were getting out of the > chemical sensor business. They told me they have discontinued all current and > future products in this field. > > Dave Duley >

Do know of any other Gas Sensor Companies? I'm also looking for readily available O2, CO, NO, NO2 Sensors, 4-20 ma or mv output. Thanks Richard Skinner spam_OUTrwskinnerTakeThisOuTworldnet.att.net ---------- {Quote hidden}> From: DREITEK <.....DREITEKKILLspam@spam@AOL.COM> > To: PICLISTKILLspamMITVMA.MIT.EDU > Subject: Re: [OT] CO sensors - old thread, new source > Date: Tuesday, January 06, 1998 11:19 AM > > In a message dated 98-01-06 10:18:34 EST, you write: > > << > awhile back, there was some discussion. I was going thru old > magazines and found Motorola makes a MGS1100 CO sensor. > Just FYI is all. >> > > My 2cents worth, > I contacted Motorolla and they told me that they were getting out of the > chemical sensor business. They told me they have discontinued all current and > future products in this field. > > Dave Duley

richard skinner wrote: > Do know of any other Gas Sensor Companies? I'm also looking for > readily available O2, CO, NO, NO2 Sensors, 4-20 ma or mv output. I'd like to know who makes the automotive oxygen sensors because I have an application in mind of controlling the atmosphere in a kiln as well as the temperature to get better repeatability in firing color glazed pottery. An oxygen or CO sensor designed for operation in a combustion zone is what I want. John Griessen Austin TX .....john_gKILLspam.....cibolo.com

Napa sells O2 Sensors - A common one is the 1 volt model OS100 Which most of the older GM's Used. Its output is .20 volts to 1.0 volts Normally, .80 to .85 depending on the application and conditions. They have single lead, two lead, three lead sensor in stock. I just bought a few of the OS100 's for 18.95 each. On the other hand, I'm looking for o2 sensors that go from 0% to 25% or so, ofcourse it will be spanned for 20.9 The ones I have been using are $150 each, and have an output of .0315 @ 21% O2. This is not bad, but the price is High, its has cheap construction and short life, and hard to get. I found one I really like but they will not sell it to me unless I send the meter in for repair. It has a real dependable, accurate, long life cell for 75.00 I snatched one from a meter and used in my setup with great success, but the manufactor sent my meter back and said they had to have the old cell in order to give me a new one. These people are so paranoid its unreal. They won't even sell parts unless you ship it back to them (not warranty). Reverse engineering was simple. They used a small op amp, a adjustable voltage ref to a 7106cpl then to the led's Even though they tried to buff off all the part numbers, just take a damp cloth and wipe the chip and the part numbers show back up (neat trick). The 10k Multiturn pot adjust gain for calibration. Mine was the same exact setup before I ever seen theirs. Richard Skinner EraseMErwskinnerspam_OUTTakeThisOuTworldnet.att.net ---------- {Quote hidden}> From: John Griessen <john_gspam_OUTCIBOLO.COM> > To: @spam@PICLISTKILLspamMITVMA.MIT.EDU > Subject: Re: [OT] CO sensors - old thread, new source > Date: Tuesday, January 06, 1998 9:47 PM > > richard skinner wrote: > > > Do know of any other Gas Sensor Companies? I'm also looking for > > readily available O2, CO, NO, NO2 Sensors, 4-20 ma or mv output. > > I'd like to know who makes the automotive oxygen sensors because I have an > application in mind of controlling the atmosphere in a kiln as well as the > temperature to get better repeatability in firing color glazed pottery. An > oxygen or CO sensor designed for operation in a combustion zone is what I want. > > John Griessen > Austin TX > KILLspamjohn_gKILLspamcibolo.com

>Do know of any other Gas Sensor Companies? I'm also looking for >readily available O2, CO, NO, NO2 Sensors, 4-20 ma or mv output. > I found a good site at, http://205.247.156.2/ they have a section on gas sensors. Plus lots of other good info. I am starting work on an application that requires a low cost O2 sensor, and I was thinking along the lines of trying to build a custom paramagnetic O2 sensor. Does anyone have any experience with these? Ray Gardiner Technical Director DSP Systems RemoveMErayTakeThisOuTdsp-systems.com private email to:- spamBeGonerayspamBeGonenetspace.net.au http://www.dsp-systems.com

In a message dated 98-01-06 21:15:27 EST, you write: << Do know of any other Gas Sensor Companies? I'm also looking for readily available O2, CO, NO, NO2 Sensors, 4-20 ma or mv output. Thanks Richard Skinner TakeThisOuTrwskinnerEraseMEspam_OUTworldnet.att.net >> Hello Richard, No I don't have any other sources. I am currently looking for a Hydrocarbon detector. I am trying to build a Pic controlled meter that will warn of an explosive concentration of solvents in the atmosphere inside our machine. I dug one sensor out of a hand held unit I bought. The sensor is made of a small heater that warms a conductive polymer. When the sensor is exposed to Hydrocarbons, the polymer swells changing its conductivity. Anyway if anyone else has a URL or two I would be interested. David Duley http://www.dreitek.com